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Encyclopedia > 32 bit

32-bit is a term applied to processors, and computer architectures which manipulate the address and data in 32-bit chunks. It is also a term given to a generation of computers where 32_bit processors were the norm.

N-bit computers
4-bit | 8-bit | 16-bit | 32-bit | 64-bit | 128-bit
N-bit applications
4-bit | 8-bit | 16-bit | 32-bit | 64-bit | 128-bit

The range of integer values that can be stored in 32 bits is 0 through 4294967295, or -2147483648 through 2147483647 using two's complement coding. Hence, a 32-bit processor can address 4GB of byte-addressable memory.

The external address and data buses are often wider than 32-bits but both of these are stored and manipulated internally in the processor as 32-bit quantities. For example, the Pentium Pro processor is a 32-bit machine, but the external address bus is 36-bits wide, and the external data bus is 64-bits wide.

See also: 32-bit application, 32-bit era, 16-bit, 16-bit application, 64_bit

  Results from FactBites:
32-bit application - Wikipedia, the free encyclopedia (373 words)
In computer architecture, 32-bit is an adjective used to describe integers, memory addresses or other data units that are at most 32 bits (4 octets) wide, or to describe CPU and ALU architectures based on registers, address buses, or data buses of that size.
These are 16 bit microprocessors with a segmented address space.
If the base address of all 32-bit segments is set to 0, and segment registers are no more used explicitly, the segmentation can be forgotten and the processor appears as having a simple linear 32-bit address space.
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